Gas fired heater



FIG. 1 is a front perspective view of a gas fired heater, showing our new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is an enlarged right side elevation view thereof;

FIG. 4 is an enlarged left side elevation view thereof; and

FIG. 5 is an enlarged top plan view thereof. 

The ornamental design for a gas fired heater, as shown. 